document.write( "Question 449380: I need help with this question please:\r
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document.write( "Solve the system of equations \r
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document.write( "x + y = 5
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document.write( "x - y = -9 \n" );
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Algebra.Com's Answer #309126 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! x + y = 5 \n" ); document.write( "x - y = -9 \n" ); document.write( "solve using the \"addition\" method: \n" ); document.write( "x + y = 5 \n" ); document.write( "x - y = -9 \n" ); document.write( "-------------- \n" ); document.write( "2x +0y = -4 \n" ); document.write( "2x = -4 \n" ); document.write( "x = -2 \n" ); document.write( ". \n" ); document.write( "substitute above into equation 1: \n" ); document.write( "x + y = 5 \n" ); document.write( "-2 + y = 5 \n" ); document.write( "y = 7 \n" ); document.write( ". \n" ); document.write( "solution: \n" ); document.write( "x = -2 \n" ); document.write( "y = 7 \n" ); document.write( " |